Verifying The Master Blocking Sensor Configuration - Cisco 4215 - Intrusion Detection Sys Sensor Configuration Manual

Troubleshooting the 4200 Series Appliance

Verifying the Master Blocking Sensor Configuration

To verify that a master blocking sensor is set up properly or to troubleshoot a master blocking sensor
that is not set up properly, you can use the show statistics network-access command. Make sure that
the forwarding sensor is set up as TLS trusted host if the remote master blocking sensor is using TLS for
web access.
To verify a sensor's master blocking sensor configuration, follow these steps:
View the Network Access Controller's statistics and verify that the master blocking sensor entries are in
Step 1
the statistics:
sensor# show statistics network-access
Current Configuration
AllowSensorShun = false
ShunMaxEntries = 250
MasterBlockingSensor
State
ShunEnable = true
ShunnedAddr
If the master blocking sensor does not show up in the statistics, you need to add it.
Step 2
For the procedure, see
Step 3 Initiate a manual block to a bogus host IP address to make sure the master blocking sensor is initialing
blocks:
sensor# configure terminal
sensor(config)# service network-access
sensor(config-net)# general
sensor(config-net-gen)# block-hosts 10.16.0.0
Exit network access general submode:
Step 4
sensor(config-net-gen)# exit
sensor(config-net)# exit
Apply Changes:? [yes]:
Press Enter to apply the changes or type
Step 5
Verify that the block shows up in the Network Access Controller's statistics:
Step 6
sensor# show statistics network-access
Current Configuration
AllowSensorShun = false
ShunMaxEntries = 100
State
ShunEnable = true
ShunnedAddr
Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 5.0
C-22
SensorIp = 10.89.149.46
SensorPort = 443
UseTls = 1
Host
IP = 122.122.122.44
ShunMinutes = 60
MinutesRemaining = 59
Configuring the Sensor to be a Master Blocking Sensor, page
Host
IP = 10.16.0.0
ShunMinutes =
to discard them.
no
Appendix C Troubleshooting
10-25.
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